CFM vs. PSI Air Pressure: What You Need To Know - Atlas Copco

26 Dec.,2023

 

No matter your mobile air compressor application, big or small, it’s helpful to understand at least some of the science behind an air compressor system. That’s because every application is different, and every application demands a compressor that meets the specific needs of that application.

So, what do you need to know? For starters, it helps to know the difference between pressure and flow.

Air pressure is measured in pounds per square inch or PSI, while air flow (also referred to as volume) is measured in cubic feet per minute or CFM. How psi and cfm work: PSI and CFM are the two operational standards for measuring pressure within an air compressor, and the key measurements that operators must consider when sizing a compressor to a specific application. Sizing a towable air compressor to an application correctly optimizes its use of energy, making its operation as efficient and cost-effective as possible.

What is the difference between the two and why are they important?

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